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Negative results in phase III trials of complex interventions: cause for concern or just good science?

Mike J Crawford1, Kirsten Barnicot2, Sue Patterson2

  • 1Mike J. Crawford, FRCPsych, Kirsten Barnicot, PhD, Centre for Mental Health, Imperial College, London, UK; Sue Patterson, PhD, Metro North Mental Health, Queensland, Australia; Christian Gold, PhD, GAMUT, The Grieg Academy Music Therapy Research Centre, Uni Research Health, Bergen, Norway m.crawford@imperial.ac.uk.

The British Journal of Psychiatry : the Journal of Mental Science
|July 3, 2016
PubMed

Insights

Many complex mental health interventions fail in late-stage trials. Improving trial design and using adaptive methods can optimize resource use and increase success rates for these crucial interventions.

Area of Science:

  • Clinical Trials
  • Mental Health Research
  • Intervention Science

Background:

  • Exploratory trials often show promise for interventions, but subsequent phase III studies frequently fail to replicate these findings.
  • A high failure rate in recent phase III trials for complex mental health interventions is a significant concern within the field.

Discussion:

  • The transition from early-stage promise to late-stage validation is a critical bottleneck for complex interventions.
  • Investigating the reasons behind high attrition rates in clinical trials is essential for improving future research.
  • The inherent complexity of mental health interventions may contribute to difficulties in demonstrating efficacy in large-scale trials.

Key Insights:

  • Not all promising exploratory trial results translate to successful phase III outcomes.
  • The current rate of failure in complex mental health intervention trials necessitates a re-evaluation of research methodologies.
  • Adaptive trial designs offer a potential solution to enhance efficiency and success rates.

Outlook:

  • Future research should prioritize the careful consideration of trial processes to mitigate failure.
  • Increased adoption of adaptive trial designs in mental health research could lead to more efficient resource allocation.
  • Implementing adaptive strategies may improve the reliability and success of complex intervention validation.

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